Hombe e



I UNITED STATES PATENT OFFICE.

HOMER E. JENNE, OF BEN LOMOND, CALIFORNIA.

INTEREST-INDiCATOR.

SPECIFICATION forming part of Letters Patent No. 287,290, dated October 23, 1883,

(No model.)

To all whom it may concern.-

Be it known that I, HOMER E. JENNE, a citizen of the United States, residing on Ben Lomond, in the county of Santa Cruz and State of California, have invented certain new and useful Improvements in Interest-Indicators, of which the following is a specificationnefen enee being had to the accompanying drawings and letters of reference marked thereon, in which- Figure l is a front view of my improved interest-indicator. Fig. 2 is a back view thereof, and Fig. 3 is a vertical central section.

My invention relates to improvements in interest and other analogous indicators; and my invention consists of a weighted disk provided with interest or other tables on its opposite faces, and journaled between two graduated stationary circular screens of the same diameter, provided each with a pointer or hand, and a slot or window whereby the figures on the opposite faces of the disk and 0p posite the windows can be read, the circular screens being secured at their circumferences to a metal band provided with a hooked arm adapted to engage in the socket of a plate secured to a wall or other object, whereby the indicator may be turned around when desired,

and the metal band being provided with a brake to hold the disk in any desired position, as hereinafter more fully set forth.

In the accompanying drawings, A represents a disk, preferably made of card-board or some light material, which turns between the two circular screens B B, of the same diameter, on a shaft, 11, passing through holes in the centers of the disk A and screens B B. The circular screens BB are of the same diameter, which is slightly longer than the diameter of the diskA. To the circumferences of the screens 13 B is secured a metal band, a, which forms the framework of the indicator, and is provided with a hooked arm, 0, the hook of which is adapted to engage in the socket 0 of the plate m, which is screwed to a wall or other object, thus allowing either side of the indicator to be turned around for use. 011 both the front and back faces of the disk A are arranged in several circular concentric rows printed tables of answers to questions in interest, exchange, &c., each column containing three hundred and sixty-five answers. In

shown.

Figs. 1 and 2, in which the lower part of the circular screens is represented as broken away to show the disk A, the answers are represented by short lines. In the outer row, on the front of the disk A, are the numbers from O to 5564, inclusive, and opposite each the interest on some fixed principal-as $1, $100, or $1,000-for that number of days at different rates, occupying one row. There are openings or windows Z) L in the screens B B just large enough to show one row of figures or answers in each row on the disk A, and headed, as shown,to correspond to the different columns. On the front screen, 13, are marked months and days of the months in regular order, as

To the front end of the shaft 11, that turns the disk A, is screwed the knob c. The pointer or hand d and larger knob 6, made in one piece therewith, turn on the shaft a of the disk A, between the knob c and the screen 13, so that when the knob c is turned the hand is made to turn with it by reason of the frictional contact of the knobs c and c, the knob e and hand (I being made to fit the shaft a tightly enough to turn with the shaft, and yet be loose enough to allow the hand to be moved with out turning he shaft 92, as the disk A is held back by a brakespring, g, as hereinafter more fully described.

A plug or piece of lead, w, (see Fig. 1,) is secured to the dis r A, near its circumference, in such a position that when the weight w is at the bottom of the disk A the row of ciphers is in sight through the window I).

By pressing the knob 0 back from c the hand (I may be turned to any desired date without moving the disk A; but should the hand (Z be turned from one date to another by turning the knob c, the disk A, moving with it, would show at the window Z) the difference in time between the two dates and the in terest for that number of days.

9 represents a spring or brake riveted to the lower part of the band a, and adapted in its normal position to press against the circumfcrence of the disk A with sufficient force to overcome the effect of the weight and hold the disk A wherever it is stopped. lVhen the spring or brake y is pressed down by the operator, the weight to will turn the disk A back, the disk being stopped by the short pin 71,

projecting from the disk A near its oircum-- ference, catching against the wire .2, which is secured to the brake g in such a manner that when the brake bears against the circumfer- 5 ence of the disk A the bent end of the wire 6 is out of the path of the pin h, and when the brake y is pressed down by the operator the bent end of-the wire catches the pin h and arrests the revolution of the disk A. 4

The tables on the back side of the disk A may be devoted to some other subject or subjects, and the answers or tables arranged on the back of A, as on the front, and by employing corresponding marks properly placed on the screen 13, and the hand 9', and knob Z, made inone piece, and inserted on one end of the shaft 41, that turns the disk A, any desired answer may be made to appear at the window 70 in the screen 13 by turning the hand j to the proper point.

If properly set 'by hand at zero, when necessary the device may be used in any position; but in that case the weight should be omitted.

Having thus fully described my invention, what I claim as new, and desire to-secure by Letters Patent, is

1. The combination,with adisk,A,provided with interest or other tables on its. opposite faces, and turning between two slotted circu- 3o 1ar graduated screens, B B, provided with hands, of a metal band connecting the screens,

and provided with a hooked arm, 0, adapted to be inserted in a socket, whereby the disk and screens can be turned from side to side, substantially as described. 3 5

2. The combination, with the pivoted slotted and graduated screens B B, provided with hands, of the vertical disk A, journaled be tween the screens, and provided with a weight, w,-for returning it to its normal position, sub stantially as described. a

- 3. The combination, with the pivoted, slotted, and graduated screens 13 B, provided with hands, and vertical weighted disk A, journaled between the screens, of the brake g, substan- .tially as described, and for the purpose set Witnesses:

E. J ENNE, M. O. J ENNE. 

